Claude 3 Sonnet

Last updated July 12, 2026

Claude 3 Sonnet is online via Amazon Bedrock. It will be shutdown on July 30, 2026.1

Anthropic

Claude 3 Sonnet was accessible via the Anthropic API for 505 days.2

Timeline

  • 2024-03-04: Active
  • 2024-06-20: Legacy (Sonnet 3.5 launch)
  • 2025-01-21: Deprecated
  • 2025-07-21: Retired

Post-deployment report

No post-deployment report exists on record as of July 12, 2026.

Amazon Bedrock

In September 2025, Amazon Bedrock customers were notified that Sonnet 3 would no longer be available from Oct 31, 2025. That date passed without the model going offline.

As of July 2026, Bedrock lists Sonnet 3’s end-of-life date as Jul 30, 20261.

Footnotes

  1. Model lifecycle - Amazon Bedrock (archived July 8, 2026) 2

  2. Model deprecations (Claude Platform Docs, retrieved July 3, 2026)